Very recently a severe vulnerability in the OpenSSL library was announced. It affected the vast majority of the internet.

What kind of attack? It allows attackers to eavesdrop on communications, steal data directly from the services and users and to impersonate services and users.

ACD Systems https://store.acdsee.com uses the Digital River ecommerce system. The load balancer tier of Digital River’s commerce system does not use the affected version of OpenSSL and is therefore not susceptible to this vulnerability. Digital River commerce sites and all other ACD Systems servers are up to date and therefore not vulnerable to the Heartbleed bug at this time.